Shock-absorber.



` provecl '2e Y Shock absorber applied'thereo,

Bile 'il Specifics-tion o Leiters Eatent.

To all 'wlw/:11. t may @0f/www lle it known that l, Reclam? F. Heir N5 acitizen offlie United States, 'fesifliuj c Humilton, in t-lie county cilulei' :nifl iete of lhio, have inveiieenl certain nevfwini'l usefulimprovements in Slioel-bsmbere; and l (lc hereby declare *the fcllovingto be :i "full, elem-i and exact esciiption of the invention, such :iswill enable oliei's skilled in like arite which it avppeiziins to makeuml use 'lie eme. i l

This invention lies for its cliee ce povicle- :in improved shock:ileeoilieie peiticulely designed foi' use in connection with metervehicles for eectively cushioning oi iilisoebing the movement o' thebody of the vehicle incident ofri'avel' ever rough ronds.

Another object isltlie previsien of :in im sneek absobe eennecing oneierminal of eeeli semi-ellipticel supporting spring with the vehicle'Emme' and embodying' means for eleetively absorbing the recoil movementof eli lframe.

'nohei cbjeca ie the previeion of meer-is for inain'zaining the perte ofthe shock ab Sellier in lubricued ccniiicn. lilith these and olierobjects in View., the

invention consists in the novel ccns'tiuctien, "cembineien :unl

aii'zingement of pavia; :is will ne he'einaftei speciiiccliy described,'cluimefl and illustrated in flic accompanying flsivinfg, in which:

l? Ie l iepesents a, frugmental suie ele vatien of afvehicle,illustrating lie improved E2- repx'egsents lengimelinal secsienal Viewthrough the cylinder centziinng the shock absorbing Spring, and

Fig. 3 iepzfesents e` letail sectional View, partly broken away, through'che spring anrl shackles- Referring io the drawing in detail, Whereinsimilar reife-rence numerals clesignae cor lespencling parte throughoutthe seveial views, the numerals 5 zin 6 indicate the from enel rem'axles, respectively, which are Supportecl upon the Wheels 7. Semielliptical leaf springs 8 are fastened centrally upon the :axles 5 and andsupport the vehicle frame 91 at the opposite ends of the latter.

A rubber bumper 10 is fastened adjacent the .inner encl of. eee i spng 8and the laite is connected by shackles, o1 links, l?. with ene arm of abell crank l2, which leiter is pivetally Secured to a, depending Suppen13 cai'iefl by he frame 9,

Application Siler?. November 24 E916. Sex-M1339. ISI-Mle. v

Dee; 24;?

.The bol'ae M ccnnecling Eli shackles. l with ille sp'ing; Send bell cmla i2 :mil also connecting the bell (zi-ank 1Q porting member 1&5receiveel .Ji'e'liin' coil .springs l5, whiel engage el ene end wich thehea/,isle o'f iili, and ai. folieii oppesite ende wiii elle ccleeentno-ien. the shackles and hell crankond. nrevent leese nim/einem: folieparte. L i

The e'cliei ein@ J each bell eranlL/ ie y 1 i .1 e 1 ioiwo'aliy cem i,ie )with 91515011 wel il, wine-hei. s rough heed l@ in. the Ain", e uoi' the inclined ey'linclei 19. The e@ tlic opposite emi 03 cylinderreilly connecte@ Willi :i sec tional rod l 12u/ing lie adjsicenzezminals ef lie sections threaded enel connected by e mmh-acide wherebythe lengh of the real iiezxy be v i d, as Qleeiieel The emi ci he,section onposize ilie cylinder 19 is pi'v @tally cennected ed.; 235ajecent the longitu {linzil fcener of the longitudinal memb y ci. Enevehicle iifenie 9.

The piezen rofl l? extends through a pecl@ ing gland @fl und iscenneeted Withe piston heed Z5 e (lalily n'ieunted in the cylinder fin:annulaicuehiening element 2S consi'uctefl e? fell; ci: @they cesilien'materiel is fastened te die undef side ef the pis'mn 55, :unil is.:Li-zizipceel, lining the dewnwald moveinen: of the pstenybo engage theheed 18 @nfl tl vielfe? f limit lle mei/ement of' lle pi on i liecylinder. f

spring is connected et, one end with an apex-termi. extension or ear 28formed 0n the uppes? cylinder heeel flimf is cennecied et its oppositeenelwith a ring 29 fasteneclto *che pieten The spring 2'4" is designedto resis the downward movement of the pis'mn within the eylindef. v

The lower pcrcien lie cylin i '19 is ioimeo wili :i iilling (mening inwhich is fitted. a cap or plug' 30, whereby the cylinder muy bepartially illed with suitable lubrican ill., which is design-cel eolueica and insure :ifee movement ef @lie pis'lzen 17 and head 535. einoil pipe is connected at its apposite anguliuly directed ends with theupper and lower poi'iens off' lie Cylinder, the lower end of ue pipe 32coinn'iunicating with the inferior of die cylinder ein point below ,he spuce of the lulnifgtmi. 31., whereby lie li oricen iv` conducted e i, eLipper pei''icn oi the cylinder flue laei. f

t'iie bell, l with the e l) are formed with alined .ports 34, in whichis arranged a hollow `'cylindrical gravity closing valve having ports 3?adjacent one end designed to allow the iubricant to pass by the pistonduring the downward movement of the latter within the cylinder. Thevalve 3.5 is provided with a screw 38, whereby the closing movementthereof may be stopped at various. points and the downward iow of oilthrough the ports 37 controlled. i

During travel of the vehicle over an ordinary road the downward movementof the frame with relation to the axles is yieldably retarded orabsorbed bythe springs 8 and 27. During the re'eiproeatory movement oi'the piston 25 in the cylinder the lubricant 31 is e'ectively distributedover the entire inner or vworking surface of the cylinder and lubricatesthe parts of the shock absorber arranged therein. lin traversingextremely rough roads the piston head frequently moves to the cxtremelower end of the cylinder 19 and consequently the elisir ioning member2G is provided to yieldably limit the downward niovement thereof. Duringthe long down stroke of the piston. the valve 35 is automaticallyopened, thus permittingthe oilor other fluid 3l to freely pass to theportion of the cylinder 19 above message! the piston. As the pistonmoves upwardly to its initial position, the closing movement of thevalve is stopped by the screw 38 and the slow passage ot' the oilthrough the partially closed ports 37 retards the upward movement of thepiston.

What l claim is:

.y l. ln a shock absorber, a cylinder, a piston reeiprocably mounted insaid cylinder having a by-pass mort therein, a normally closed cheekvalve arranged in said port, a pipe connecting the opposite extremitiesof said cylinder, and a spring connected at one end with one end of saidcylinder and at the opposite 'end with said piston.

:2. ln a shock absorber, a cylinder, a piston rod slidably mounted inone end of said cylinder, a piston head carried by said rod, acushioning member carried by said piston and movable against one end lofsaid cylinder, a pipe connecting the opposite eX- tremitics of saidcylinder, and means normally retaining said Piston head in predeterminedposition in said cylinder.

Aln testimony whereof I atlix my signature in prese'ne) or' twowitnesses.

RAUBEN F. HOFFMAN.

Witnesses Cmmon Eenn'r, lnAn J. HOFFMAN.

